RESOLVED: javascript: multi-box phone .focus issues

[lleemon]

I have a form called CustInfo. In this form I have 3 text boxes (phone_1, phone_2, and phone_3). I figured out how after the first 3 digits (area code) I can automatically move to the next text box (phone_2). The issue is if I do a Shift-Tab it doesn't stay. Anyone know how to set it so it stays?

Here is some of my page info below.

phone_1 html tag is:

<input name="phone_1" type="text" onKeyUp="fnMoveNext(this, 'phone_2', 3, event);" size="3" maxlength="3">

phone_2 html tag is:

<input name="phone_2" type="text" onKeyUp="fnMoveNext(this, 'phone_3', 3, event);" size="3" maxlength="3">

phone_3 html tag is:

<input name="phone_3" type="text" size="3" maxlength="3">

javascript function is:

function fnMoveNext(obj, name, iMax, evt){
 var vItemLen = obj.value.length;
 var charCode = (evt.which) ? evt.which : event.keyCode
 
 if (vItemLen == iMax) {
   if (charCode != 16){
      eval("document.CustInfo." + name + ".focus()");
   }
 }
}